import pandas as pd
import numpy as np

IO = 'data.xlsx'
sheet = pd.read_excel(io=IO, header=None)
sheet = np.array(sheet)
sheet = np.c_[sheet, np.array(sheet[:, 0]).reshape(len(sheet), 1)]
sheet = pd.DataFrame(sheet)
sheet.to_excel("out.xlsx", header=False, index=False)
print(sheet)
